
* {
    padding: 0;
    margin: 0;
    text-decoration: none;
}
/*
body {
    float:left;
    background-color: #faedcd;
    display: flex;
    justify-content: space-evenly;
    height: 100vh;
    align-items: center;
}*/

.shell {
    width: 100px;
    height: 700px;
    display: flex;
    float: left;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: #bb3e03;
    background-color: #bb3e03;
    /*border-radius: 10px;*/
    transition: .3s;
    overflow: hidden;
}
.shell{
    background-color: #bb3e03;
}

.box {
    display: block;
    height: 15%;
    width: 85%;
    margin: 9px;
    border-radius: 5px;
    position: relative;
    transition: .3s;
    color: #faedcd;
}
.box i {
    font-size: 60px;
    position: absolute;
    margin: 7px 0 0 13px;
}

.box:nth-child(1)::before,
.box:nth-child(5)::before{
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background-color: rgb(55, 65, 81);
    position: absolute;
    bottom: -10px;
}

.box span{
    position: relative;
    top: 22px;
    left: 80px;
    font: 500 20px '';
    opacity: 0;
    transition: .1s;
}
.shell:hover{
    width: 270px;
}
.box:hover{
    background-color: rgb(55, 65, 81);
}
.shell:hover span{
    opacity: 1;
}
.box:hover{
    color: #fff;
}

.shell:nth-child(2) {
    background-color: rgb(243, 244, 246);
}
.shell:nth-child(2) .box:hover{
    background-color: rgb(209, 213, 219);
    color: rgb(241, 159, 159);
}
.shell:nth-child(2) .box{
    color: #000;
}

.shell:nth-child(3) {
    background-color: rgb(49,46,129);
}
.shell:nth-child(3) .box:hover{
    background-color: rgb(67, 56, 202);
}
.shell:nth-child(3) .box{
    color: rgb(140, 120, 240);
}
/* header */
.header {
    height: 100px;
    position:relative;
    float: top;

    overflow-x: hidden;
    overflow-y: hidden;
}
.header-logo {
    float: left;
    width: 62px;
    /* height: 55px; */
    margin-top: 22px;
    /* border: 1px solid black; */
}
.header-logo a {
    display: block;
    width: 55px;
    height: 55px;
    background: #ff6700 url(../images/图标.png) no-repeat 50% 50%;
}
.header-logo .lr {
    text-align: left;
    text-indent: -9992em;
}

/* header nav */
.header-nav {
    float: left;
    width: 820px;
    height: 100px;
    /* border: 1px solid black; */
}
.header-nav .nav-list{
    width: 820px;
    height: 88px;
    font-size: 16px;
    padding: 12px 0 0 30px;
}
.header-nav .nav-list .nav-category {
    float: left;
    width: 127px;
    padding: 0 15px 0 0;
}
.header-nav .nav-list .nav-category a{
    display: block;
    padding: 26px 0 38px;
    text-align: right;
    color: #333;
}
.header-nav .nav-list .nav-item {
    float: left;
}
.header-nav .nav-list .nav-item a {
    display: block;
    padding: 26px 10px 38px;
    color:#333;
}
.header-nav .nav-list .nav-item a:hover{
    color: #ff6700;
}

.header-search {
    float: right;
    width: 296px;
    height: 50px;
    margin-top: 25px;
    /* border: 1px solid black; */
}

.header-search .search-form {
    position: relative;
    display: block;
    width: 296px;
    height: 50px;
}
.header-search .search-form .search-text {
    position: absolute;
    top: 0;
    right: 51px;
    display: block;
    width: 245px;
    height: 50px;
    line-height: 50px;
    border: 1px solid #e0e0e0;
    outline: 0;
}
.header-search .search-form .search-btn {
    position: absolute;
    top: 0;
    right: 0;
    display: block;
    width: 52px;
    height: 50px;
    border: 1px solid #e0e0e0;
    font-size: 24px;
    line-height: 24px;
    background: #fff;
    color: #616161;
    outline: 0;
}
.header-search .search-form .search-btn:hover {
    background-color: #ff6700;
    color: #fff;
}
